Highfive is so simple that setting up every meeting room takes just minutes and every employee will be able to start or join a call from any room with ease. Never be called into a meeting just to get it started again. This is how video conferencing should work!

Hi, you're not accessing #middleColumn at all - judging by your markup, #middleColumn is a direct child of the body element, so none of these rulesets will apply:
#home #middleColumn,
or
#courses #middleColumn,

These rulesets would only apply if #middleColumn was contained inside an element with the id
#home or #history or #philosophy or #courses etc...

None of these is the case, so no style will apply.
If you define e.g. just #middleColumn, it should work:

"I want to put my photos online, but I don't want them stolen. What settings should I use?"
When You Put Photos Online
First and foremost, any digital file published on the WWW can be copied, stored, modified, retransmitted, etc. Remember Naps…

So you have coded your own WordPress plugin and now you want to allow users to upload images to a folder in the plugin folder rather than the default media location? Follow along and this article will show you how to do just that!

In this tutorial viewers will learn how to style transparent/translucent elements using alpha transparency in CSS
Start with a normal styled element, such as a div.: Define its "background-color" property as "rgba (255, 255, 255, .5): The numbers in…

In this tutorial viewers will learn how to style a corner ribbon overlay for an image using CSS
Create a new class by typing ".Ribbon": Define the class' "display:" as "inline-block": Define its "position:" as "relative": Define its "overflow:" as …